Nut-lock.



' ITO-"839,235.

llifiwsses MJVAN BOXEL.

NUT 1.001;.

APPLICATION FILED NOV. 20. 1905.

PATENTED DEC. 25, 1906.

v UNITED ,sTATEs PATE T. OFFICE,

MATHEW VAN BOXEL, F CLEVELAND, oHIo- NUT-Loc To all whom it may concern:

Be it known that I, MATHEW VAN BOXEL,

a citizen of'the United States, and a resident of Cleveland, count; of Cuyahoga, State of Ohio, have 'invente certain new and useful Improvements in Nut-Locks, of which I hereby declare the following to'be a full, clear, and exact description, such as will enable others skilled in the art to'which it appertains to make anduse the same.

The objects of the invention are to pro- ,vide a locking device fora bolt and nut in situations where constant vibration or shock, as in' railway-beds and .in rolling-stock, is likely to loosen the nuts upon the bolts employed and if the accident should not be discovered it is likely to result in the spreading of the rails or in the separation of structura I parts in the train above. the rail and to profication,-1 is the rail; 2, the fish-p The nut-6 is provided with angular duce a serious accident.

The invention is exemplified the accom' panying smtable grooves in the nut throu h w oh the bolt is passed, and the washer an grooves are repeated at the head of the bolt.

In the drawings accompanyingl this speciate; 3, the bolt. ratchetooves 7 on its inner face. One edge 8 o the split washer 9 will engage with the ooves in succession as the nut is rotate ,and will s ring easily in one direction, that in which't a nut is screwed u on the bolt, but cannot spring in the.0ther motion A Specification of Letters Patent. Appfloflon fil d November 20,1906- Serial lie. 288,168.

outward. The. edges of the washer are esigned to en age Patented Dec. 25, 1908.

on account of the sharp angular shoulder of the ratchet.

To maintain the nut and washer where placed upon the surface of the fish-plate or other metal device through which the bolt asses, a groove 10 is radia ly cut at the ed of the bolt-hole, in which one edge of th e split washer rests. This cut is not, angular but rounding at-the bottom, so that by means of a violent effort with a wrench the edge of the washer can be forced out of it and the nut unscrewed; but this cannot be accom lished by any vibration or shock such as is li ely to occur to the nut while in use The head 5 of the bolt is cut with ratchets on the 'inside similarly. to the nut, and a oove is cut on the art through which the olt passes next to t e head, just as for the nut; A second washer then retains the bolt the nut from turnin on the bolt. v

The washer must besuitably tempered, so

screw on the nut. It must also be tempered so as not to break easily.

' -Having described the invention, what I claim as new, Patent, is

The combination with a bolt and metal pieces throu h which it passes, of means for securing the oltvfrom turning in said pieces, and the nut from turning u on the bolt, comprising, a s lit washer un ei'neath the head and nut t e said washer 'havin its ends oppositely turned and temFere ratchetgrooves on the inner faces 0 head and nut and non-shouldered grooves in the meta and desire to secure by Letters faces adjoining the washers, substantially as described;

In testimony whereof I hereunto set my' hand this 27th day of September, 1905.

MATHEW VAN BOXEL.

Witnesses:

Wil. M. Mormon, Gno. S. C LE.

as to be stiff and yet capable of yielding to 65 from turning, and the first washer prevents 

